Five fire engines and around 35 firefighters tackled a fire in a flat in Cornwall Gardens, South Kensington.
Half of a four roomed second floor flat was damaged by fire.
Firefighters wearing breathing apparatus rescued three people using fire escape hoods. A call handler based in the Brigade's 999 control room also gave vital fire survival guidance to the occupants of the flat while crews were on their way. They were treated at the scene by London Ambulance Service crews.
One person left the flat before crews arrived and was taken to hospital suffering from smoke inhalation.
Fire escape hoods provide members of the public with up to 15 minutes protection from four of the main fire gases (carbon monoxide, hydrogen cyanide, hydrogen chloride and acrolein) and can be worn by conscious or unconscious people. If more than 15 minutes protection is required then another hood can be given to each wearer. They do not provide oxygen but temporarily filter toxic smoke to make breathing easier.
The Brigade was called at 1951 and the fire was under control by 2148. Fire Crews from Kensington, Fulham, Battersea and Hammersmith stations attended the incident.
The fire is believed to have been caused by paper too close to an electric fire.
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